Start with Reonomy or Costar to identify all the 100+ units in your target market (on and off market) and then see if you can get into direct contact with some owners.

If the software is not simplifying your life or making you more accurate, you shouldn't use it.Software does have extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

The goal is to ensure that the property remains viable even if circumstances change, like dealing with a non-paying tenant or a market downturn.

from my advice rural properties and developments aren't successful and you are climbing an uphill battle. sounds a little niche. we focus on developing and not reinventing the wheel. if this is truly what you want to focus all your time and energy on then visit the closest 5-10 of these that look like the ones you are interested and ask if they'd expand or build a secondary one. do a lot of research before you just take action 

Quote from @Michael Ewers: Hey y'all, Wondering what is the best marketing strategy for obtaining off market leads?

Uptick in action in the secondary mortgage markets I suppose?   

I would echo @Brandon Croucier - the secondary market for DSCR's is super aggressive and rates typically reflect that.

Secondary Markets Are ThrivingOmaha and San Antonio are two examples of secondary markets where the cost of entry is still reasonable.

Geographic LocationDefine the regions or markets where you want to invest.

After the check is written on the borrowers undisclosed deposit account, the bank sells the note into the secondary market.